PIC16F877T-04E/PQ - 8-bit PIC MCU, 14KB Flash, 4MHz | Microchip
Teilenummer: PIC16F877T-04E/PQ ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $12.21 | $12,21 |
| 10 | $11.5 | $115,00 |
| 100 | $10.4 | $1.040,00 |
| 500 | $9.45 | $4.725,00 |
| 1.000 | $8.75 | $8.750,00 |
PIC16F877T-04E/PQ Übersicht
An 8-bit microcontroller (MCU) is a single-chip computer containing a CPU, program memory, RAM, EEPROM, timers, and peripherals such as ADC, USART, I2C/SPI, and I/O ports. The PIC16F877 belongs to Microchip's mid-range PIC® architecture, sitting between the PIC10/12/16 baseline families and the PIC18 enhanced family; 8-bit MCUs typically run application firmware rather than operating systems and are optimized for deterministic real-time control of sensors, actuators, displays, and communication links.
Key features include 33 digital I/O pins, three 16-bit timers (Timer0, Timer1, Timer2) plus a watchdog timer, a 10-bit multi-channel Analog-to-Digital Converter (ADC), a USART for serial communication, an MSSP module supporting both SPI and I2C (master/slave), two Capture/Compare/PWM (CCP) modules, and an internal brown-out reset (BOR). The CMOS FLASH technology allows in-circuit serial programming (ICSP) through only two pins (RB6 and RB7), enabling in-field firmware updates and low-cost prototyping with a PICkit or ICD debugger.
The Harvard architecture separates program memory (14-bit wide instructions, FLASH) from data memory (8-bit wide RAM, banked), allowing simultaneous instruction fetch and data access and contributing to the deterministic 200 ns instruction cycle. The enhanced instruction set contains 35 single-word instructions with 14-bit opcode, plus an 8-level deep hardware stack and interrupt handling for hardware peripherals. The device supports in-circuit debug (ICD) via the same RB6/RB7 pins used for ICSP, eliminating the need for an external debug header.
Typical applications include industrial process control, sensor interface boards, motor control, HVAC subsystems, instrumentation front-ends, and legacy embedded systems that migrated from PIC16C7X or PIC12CXXX devices. The wide 2.0 V to 5.5 V VDD range and -40C to +125C operating temperature make the part suitable for both battery-powered consumer products and harsh industrial environments.
When designing with the PIC16F877T-04E/PQ, note that the 4 MHz speed grade limits instruction execution throughput to 5 MIPS; for higher performance the 10 MHz (PIC16F877-10) and 20 MHz (PIC16F877-20) speed grades are drop-in replacements. Microchip recommends migrating to the PIC16F887 for new designs because the PIC16F877 family is in maintenance status, but the existing design ecosystem, MPLAB X IDE support, and abundant legacy code make the PIC16F877T-04E/PQ a strong fit for sustaining engineering and legacy board replacement.
Drop-in-Alternativen für PIC16F877T-04E/PQ – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit PIC16F877T-04E/PQ (gleiche Bauform und Footprint) – abweichend in Package, Core Architecture, Timers, Operating Temperature, ADC.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
PIC16F877-04E/PQ
✅ Drop-In✓ Auf Lager
$5.72 / Stück
Datenblatt ansehen →PIC16F877-04I/PQ
✅ Drop-In✓ Auf Lager
$4.35 / Stück
Datenblatt ansehen →PIC16F877-10E/PQ
✅ Drop-In✓ Auf Lager
$6.1 / Stück
Datenblatt ansehen →PIC16F877-20I/PQ
✅ Drop-In✓ Auf Lager
Preis auf Anfrage
Datenblatt ansehen →PIC16F877-04/PQ
✅ Drop-In✓ Auf Lager
$5.7 / Stück
Datenblatt ansehen →PIC16F874-04E/PQ
✅ Drop-In✓ Auf Lager
$5.1 / Stück
Datenblatt ansehen →PIC16F877T-04E/PQ Grenzwerte & elektrische Eigenschaften
| Core Architecture | 8-bit PIC mid-range (Harvard) |
| Instruction Set Width | 14-bit |
| Number of Instructions | 35 single-word |
| Maximale Taktfrequenz | 4 MHz |
| Instruction Execution Time | 200 ns |
| Program Memory (Flash) | 14 KB (8K x 14) |
| Data RAM | 368 bytes |
| Data EEPROM | 256 bytes |
| I/O Pins | 33 |
| Timers | Three 16-bit (TMR0/TMR1/TMR2) + WDT |
| ADC | 10-bit, up to 8 channels |
| Communication | USART, MSSP (SPI/I2C) |
| PWM / CCP Modules | 2 CCP (10-bit PWM capable) |
| Operating Voltage (VDD) | 2.0 V to 5.5 V |
| Betriebstemperatur | -40C to +125C (Enhanced 'E' grade) |
| Gehäuse | 44-pin MQFP (10x10 mm) |
| Montageart | Surface Mount |
| Packaging | Tape & Reel (T suffix) |
| ICSP / ICD Pins | RB6 (ICSPCLK) / RB7 (ICSPDAT) |
| Brown-Out Reset (BOR) | Yes, internal |
| RoHS-Status | Compliant |
PIC16F877T-04E/PQ Pin-Konfiguration
| Pin 1 | MCLR/VPP — Master Clear (active-low reset) / ICSP programming voltage input |
| Pin 2 | RA0/AN0 — PORTA bit 0 / ADC analog input channel 0 |
| Pin 3 | RA1/AN1 — PORTA bit 1 / ADC analog input channel 1 |
| Pin 4 | RA2/AN2 — PORTA bit 2 / ADC analog input channel 2 / VREF- |
| Pin 5 | RA3/AN3 — PORTA bit 3 / ADC analog input channel 3 / VREF+ |
| Pin 6 | RA4/T0CKI — PORTA bit 4 / Timer0 clock input (open-drain) |
| Pin 7 | RA5/AN4/SS — PORTA bit 5 / ADC analog input channel 4 / SPI slave select |
| Pin 8 | RE0/RD/AN5 — PORTE bit 0 / Parallel slave port read control / ADC channel 5 |
| Pin 9 | RE1/WR/AN6 — PORTE bit 1 / Parallel slave port write control / ADC channel 6 |
| Pin 10 | RE2/CS/AN7 — PORTE bit 2 / Parallel slave port chip select / ADC channel 7 |
| Pin 11 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 12 | VSS — Ground reference |
| Pin 13 | OSC1/CLKIN — Oscillator crystal input / external clock input |
| Pin 14 | OSC2/CLKOUT — Oscillator crystal output / clock output (Fosc/4) |
| Pin 15 | RC0/T1OSO/T1CKI — PORTC bit 0 / Timer1 oscillator output / Timer1 clock input |
| Pin 16 | RC1/T1OSI/CCP2 — PORTC bit 1 / Timer1 oscillator input / CCP2 PWM/capture/compare |
| Pin 17 | RC2/CCP1 — PORTC bit 2 / CCP1 PWM/capture/compare |
| Pin 18 | RC3/SCK/SCL — PORTC bit 3 / MSSP SPI clock / I2C clock |
| Pin 19 | RD0/PSP0 — PORTD bit 0 / Parallel slave port data bit 0 |
| Pin 20 | RD1/PSP1 — PORTD bit 1 / Parallel slave port data bit 1 |
| Pin 21 | RD2/PSP2 — PORTD bit 2 / Parallel slave port data bit 2 |
| Pin 22 | RD3/PSP3 — PORTD bit 3 / Parallel slave port data bit 3 |
| Pin 23 | RC4/SDI/SDA — PORTC bit 4 / MSSP SPI data in / I2C data |
| Pin 24 | RC5/SDO — PORTC bit 5 / MSSP SPI data out |
| Pin 25 | RC6/TX/CK — PORTC bit 6 / USART asynchronous transmit / I2C clock (sync mode) |
| Pin 26 | RC7/RX/DT — PORTC bit 7 / USART asynchronous receive / I2C data (sync mode) |
| Pin 27 | RD4/PSP4 — PORTD bit 4 / Parallel slave port data bit 4 |
| Pin 28 | RD5/PSP5 — PORTD bit 5 / Parallel slave port data bit 5 |
| Pin 29 | RD6/PSP6 — PORTD bit 6 / Parallel slave port data bit 6 |
| Pin 30 | RD7/PSP7 — PORTD bit 7 / Parallel slave port data bit 7 |
| Pin 31 | VSS — Ground reference |
| Pin 32 | VDD — Positive supply voltage (2.0 V to 5.5 V) |
| Pin 33 | RB0/INT — PORTB bit 0 / External interrupt input |
| Pin 34 | RB1 — PORTB bit 1 |
| Pin 35 | RB2 — PORTB bit 2 |
| Pin 36 | RB3/PGM — PORTB bit 3 / Low-voltage ICSP programming enable |
| Pin 37 | RB4 — PORTB bit 4 |
| Pin 38 | RB5 — PORTB bit 5 |
| Pin 39 | RB6/PGC — PORTB bit 6 / In-circuit serial programming clock / ICD clock |
| Pin 40 | RB7/PGD — PORTB bit 7 / In-circuit serial programming data / ICD data |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | NC — Not connected (per datasheet) |
| Pin 44 | NC — Not connected (per datasheet) |
Typische Anwendungen
PIC16F877T-04E/PQ ist geeignet für 6 Anwendungs: Industrial Process Control, Sensor Interface Boards, HVAC Subsystem Controllers, Motor Control (Stepper / DC), Legacy Embedded System Sustaining, Instrumentation Front-Ends.
Industrial Process Control
The PIC16F877T-04E/PQ fits industrial process-control applications because of its 14 KB FLASH, 368 bytes RAM, 33 digital I/O, 10-bit multi-channel ADC, and -40C to +125C enhanced industrial temperature range. The 200 ns instruction execution at 4 MHz supports deterministic PID loop rates of 5-10 kHz, while the three 16-bit timers (TMR0, TMR1, TMR2) provide multiple time bases for solenoid valve PWM, pump speed control, and analog sensor sampling. The 2.0 V to 5.5 V VDD range tolerates 24 V industrial rails after external regulation. The MQFP-44 package is robust for factory-floor PCB designs with conformal coating. Pair with a MAX485 RS-485 transceiver for Modbus RTU industrial networking or a 4-20 mA current loop driver for legacy sensor networks.
Empfohlen
Sensor Interface Boards
The PIC16F877T-04E/PQ is well suited for sensor-interface front-ends because its 10-bit ADC with up to 8 input channels handles multiple analog sensors simultaneously, while the integrated MSSP module supports both SPI and I2C communication with digital sensors such as accelerometers, gyroscopes, and temperature/humidity devices. The 256 bytes of internal EEPROM provides non-volatile storage of sensor calibration coefficients, and 368 bytes of RAM holds 30+ recent samples for averaging. The 33 digital I/O pins interface with discrete sensors and indicator LEDs, and the USART links to a host controller or Bluetooth module. Operate at 5.0 V for legacy analog sensor compatibility or 3.3 V for modern digital sensors. The MQFP-44 footprint is easy to lay out on a 4-layer sensor board with ground plane.
Empfohlen
HVAC Subsystem Controllers
The PIC16F877T-04E/PQ targets HVAC subsystem controllers because its 14 KB FLASH stores full state-machine firmware for thermostat, damper, and blower control, while the 10-bit ADC reads multiple thermistor temperature sensors and pressure transducers. The two CCP (Capture/Compare/PWM) modules drive TRIAC phase-angle control for AC line voltage dimming and variable-speed blower motor control. The USART connects to a wall-mounted display or a wireless thermostat gateway, and the enhanced -40C to +125C temperature grade tolerates attic and outdoor HVAC environments. The MSSP module interfaces with EEPROM-backed real-time clocks (such as DS1307) for scheduling. Compared with PIC16F876, the PIC16F877 offers double the program memory and 8 more I/O pins, allowing single-chip HVAC control without external logic.
Empfohlen
Motor Control (Stepper / DC)
The PIC16F877T-04E/PQ serves stepper and brushed-DC motor control applications because its three 16-bit timers and two CCP PWM modules generate up to 2 channels of variable-frequency, variable-duty PWM for H-bridge drivers. The 33 digital I/O pins drive L298 dual H-bridge logic inputs, end-stop limit switches, and quadrature encoder feedback. The USART enables Modbus or CAN bridge to a supervisory PLC, and the 10-bit ADC monitors motor current via shunt resistor for closed-loop torque control. The 5 MIPS throughput (at 4 MHz) executes field-oriented control algorithms for small BLDC motors up to several kHz. The 256 bytes EEPROM stores motor calibration parameters. For higher-rate FOC, upgrade to PIC16F877-20I/PQ at 20 MHz/5 MIPS.
Empfohlen
Legacy Embedded System Sustaining
The PIC16F877T-04E/PQ is the sustaining-engineering choice for legacy embedded systems because the PIC16F877 family has a multi-decade installed base in industrial controllers, automotive accessories, and consumer appliances still in field service. The 14 KB FLASH supports direct port of legacy PIC16C7X firmware via assembly-level compatibility, and the same ICSP programming interface (RB6/RB7) allows in-field firmware updates with the same PICkit tools used 20 years ago. The -40C to +125C enhanced grade matches the original qualification, and the MQFP-44 footprint is a direct PCB-level replacement for end-of-life boards. The 5 V-tolerant digital I/O is compatible with legacy 5 V peripheral chips that have no 3.3 V equivalent. Use PIC16F877T-04E/PQ to keep mature products in production without re-qualifying the firmware stack.
Empfohlen
Instrumentation Front-Ends
The PIC16F877T-04E/PQ is well suited for portable instrumentation front-ends because its 14 KB FLASH stores calibration tables and DSP-style digital filtering firmware, while the 10-bit ADC captures transducer signals at sample rates up to ~50 kSPS (channel-sequential). The USART streams digitized data to a host PC or Bluetooth link, and the 33 digital I/O pins drive LCD segment displays, keypads, and status LEDs. The 2.0 V to 5.5 V VDD range supports both 3.3 V lithium-battery and 5.0 V USB-powered operation, while the 256-byte EEPROM stores non-volatile instrument calibration. The enhanced -40C to +125C grade handles outdoor measurement environments. Compared with PIC16F876, the PIC16F877 doubles program memory, enabling on-chip FIR/IIR filtering without external DSP.
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Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für PIC16F877T-04E/PQ – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | PIC16F877-04E/PQ | PIC16F877-04I/PQ | PIC16F877-10E/PQ | PIC16F877-20I/PQ | PIC16F877-04/PQ | PIC16F874-04E/PQ |
|---|---|---|---|---|---|---|---|
| Package | 44-pin MQFP (PQ) | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same | 44-pin MQFP (PQ) - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Maximum Clock Frequency | 4 MHz | 4 MHz | 4 MHz | 10 MHz | 20 MHz | 4 MHz | 4 MHz |
| Instruction Execution Time | 200 ns | 200 ns | 200 ns | 100 ns | 200 ns (from 20 MHz clock) | 200 ns | 200 ns |
| Program Memory (Flash) | 14 KB (8K x 14) | 14 KB | 14 KB | 14 KB | 14 KB | 14 KB | 7 KB (-50%) |
| Data RAM | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 368 bytes | 192 bytes (-48%) |
| Data EEPROM | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes | 256 bytes |
| Operating Temperature Range | -40C to +125C (Enhanced 'E') | -40C to +125C (Enhanced) | -40C to +85C (Industrial) | -40C to +125C (Enhanced) | -40C to +85C (Industrial) | 0C to +70C (Commercial) | -40C to +125C (Enhanced) |
| I/O Pins | 33 | 33 | 33 | 33 | 33 | 33 | 33 |
| ADC Channels | 8 (10-bit) | 8 (10-bit) | 8 (10-bit) | 8 (10-bit) | 8 (10-bit) | 8 (10-bit) | 8 (10-bit) |
Wichtigste Unterscheidungsmerkmale
- Tape & Reel packaging variant for SMT production (vs. PIC16F877-04E/PQ)
- Enhanced -40C to +125C operating temperature for harsh environments (vs. PIC16F877-04I/PQ)
- Doubles program memory of PIC16F874 family member (vs. PIC16F874-04E/PQ)
- Industry-standard PIC16F877 die with 30+ year ecosystem (vs. Generic 8-bit MCU (e.g. ATmega32, STM8S))
Designhinweise
Estimated: at VDD=5.0 V and active mode @ 4 MHz, the PIC16F877T-04E/PQ draws approximately 2-4 mA. Place a 100 nF ceramic decoupling capacitor directly between each VDD pin (11 and 32) and the nearest VSS pin (12 and 31), with traces shorter than 5 mm to suppress digital switching transients. Add a bulk 10 uF tantalum or aluminum electrolytic capacitor at the board's power input to handle inrush during ICSP programming (which briefly drives MCLR/VPP to ~13 V). The internal brown-out reset (BOR) is configurable but does not replace external supply supervision in safety-critical designs; for industrial applications add a dedicated supervisor such as MCP100 or TPS3839.
Route the oscillator traces (OSC1/OSC2, pins 13/14) with short, symmetric traces enclosed in a guard ring tied to ground. For a 4 MHz crystal application with two 22 pF load capacitors, place the capacitors within 3 mm of the OSC pins. The ICSP pins (RB6/PGC, RB7/PGD) must be accessible - either through a 6-pin ICSP header (standard Microchip pinout: 1=MCLR, 2=VDD, 3=VSS, 4=PGD, 5=PGC, 6=NC) or test points on production boards. Leave MCLR/VPP (pin 1) tied to VDD through a 10 kohm pull-up resistor, with the ICSP programmer overriding this during programming.
Three common pitfalls: (1) Do not leave MCLR floating - an unconnected MCLR pin will pick up noise and trigger spurious resets; always use the 10 kohm pull-up. (2) The PIC16F877 family is in Microchip maintenance status with 12-14 week lead times; for new designs start with PIC16F887 (drop-in enhanced replacement with active production) or PIC18F45K22 (32 KB FLASH, 16 MIPS, $2.50 typical). (3) The 33 I/O claim assumes all PORTB pull-ups are enabled; PORTB pins default to inputs with weak pull-ups at POR, but these can be disabled in firmware - verify RBPU bit in OPTION_REG before debugging 'stuck-high' inputs.
The PIC16F877T-04E/PQ's 5 V CMOS I/O has limited drive strength (~25 mA source/sink per pin, 200 mA total for all pins). For high-speed signals (SPI > 5 MHz, USART > 115.2 kbaud), add 33 ohm series damping resistors near the driver pin to reduce transmission-line ringing on traces > 50 mm. The analog inputs (RA0-RA5, RE0-RE2) share pins with digital I/O; configure them as analog inputs by clearing the corresponding PCFG bits in ADCON1 and as digital inputs by setting the corresponding TRIS bit. Add a 100 ohm isolation resistor between ADC input and digital signal source to prevent digital switching noise from coupling into the analog measurement.
Compliance-Informationen
RoHS compliant per Microchip product page. Lead-free (Pb-free) and halogen-free per Microchip PIC16F877 family datasheet 30292D environmental compliance section. AEC-Q100 not qualified - the 'E' grade refers to enhanced temperature, not automotive qualification; for AEC-Q100 qualified applications choose PIC16F877A-I/PQ or PIC18F46K22-I/PT instead.
